Once the private garden of Hyder Ali, Lalbagh was initially laid as per the typical Mughal style. Landscaped over an area of 40 acres, the 18th century garden was later renovated and developed by his son Tipu Sultan. During the British period, Lalbagh received some extra area and many new species of plants; it was later turned into a botanical garden. Today the entire area is spread over 240 acres and is a green haven in the midst of skyscrapers. One of the most attractive features here is the Glass House. Lalbagh serves as a venue to the famous flower show organised two times a year, in the months of January and August, as an addition to the celebrations of Republic and Independence Days.